Conveyor equipment

Classification and Definitions of Bulk Materials, CDMA. 550, Conveyor Equipment Manufacturers Association, Rockville, Md., 1988. 

Belt Conveying Troughing and Betum Idlers, CEMA Standard502-1980, Conveyor Equipment Manufacturers Association, Rockville, Md., 1980. Conveyor and Elevator Handbook, 3rd ed.. Rubber Manufacturers Association, Washington, D.C., 1988. 

Conveyor-belt speeds above approximately 300 ft per minute (1.5 meters per second) impart sufficient momentum to material discharging at its head pulley to cause lifting of material streams in a trajectory from the head pulley. A trajectory is illustrated in Fig. 19-7. Blades of the sample cutter are positioned to intersect the trajectoiy. See Fig. 19-7 for an example of a linear-traversing bottom-dump cutter installation. Calculation of trajectory profiles are described in the Conveyor Equipment Manufacturers Association publications and similar references. 

Electrochemical corrosion protection of the internal surfaces of reaction vessels, tanks, pipes and conveyor equipment in the chemical, power and petroleum industries is usually carried out in the presence of strongly corrosive media. The range stretches from drinking water through more or less contaminated river, brackish and seawater frequently used for cooling, to reactive solutions such as caustic soda, acids and salt solutions. 

Conveyor Equipment Manufacturers Association, Belt Conveyors for Bulk Materials, 1966, pp. 26-33. 

Of special interest on multiple-spout conveyor-equipped fluidizers and on certain types of screw and belt filling machines is a combination operator s seat, bag rest, and tuck-in-sleeve work aid. This device places the operator in an optimum work position after filling, to allow easy and positive tucking of the sleeve. Extensive use of the polyethylene film internal sleeve, however, has reduced the significance of die tuck-in-sleeve feature. Several types of heat-sealable valve-bag sleeves are available, as is equipment for closing them automatically. These are used when even slight leakage of product from an internal sleeve bag is unacceptable. 

Conveyor Equipment Manufacturers Association, 6e/t Conveyors tor Bulk Materials, 19. 25-33. 

A wet extruder is a high-strength cut-flight screw conveyor equipped with steam injection along the housing and a restricted orifice discharge. These units are... 

Book No. 550 -1970, Classification and definitions of bulk materials, Conveyor Equipment Manufacturers Association, Washington, 1970. 

CEMA. Screw Conveyors. CEMA Book 350, 3" edn. Conveyor Equipment Manufacturer s Association Naples, FL, 2003. 

TABLE 2 Sortation Conveyor Equipment Guide (Kulwiec 1999)... 

Manual spray equipment is applied usually where the total volume of work to be cleaned is small or the workloads are intermittent. Conveyorized equipment is preferred whenever it can be economically justified. The elimination of human error results in consistent cleaning results and maximum economy. 

Air-vapor interface area must be kept to a minimum consistent with the warning about piston effect if the tank is too small. Various devices for reducing the area can be designed into conveyorized equipment. 

Experience has indicated that free-draining work may be cleaned for as little as V2 gal (2 L) of solvent per ton when handled in covered, conveyorized equipment. The same workload will require at least 20% more solvent per ton when processed through manually operated, open-top units. This increase is due to greater loss of solvent vapor by diffusion into the air and by nonuniformity of work throughput. 

Predicting losses is difficult, particularly losses through and around doors, jamb, sills, tramp air, cooling losses, and losses through conveyor equipment and gaps around it. Assigning safety factors or security factors to cover these matters requires experience and careful judgment. 

Conveyor Equipment Manufacturers Association (1980) Screw Conveyors, Book 350 (CEMA). 

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